SN4 ""

No	Pattern	Freq
1	the [adj] [adj] period	410
2	the [adj] [adj] period	403
3	the [adj] [adj] period	341
4	the early [adj] period	101
5	the early [adj] period	96
6	the late [adj] period	71
7	the late [adj] period	61
8	the immediate [adj] period	50
9	the immediate [adj] period	50
10	the [adj] post-war period	39
11	the [adj] post-war period	39
12	the [adj] modern period	39
13	the [adj] modern period	39
14	the [num ord] [adj] period	29
15	the [adj] medieval period	21
16	the [adj] medieval period	21
17	the [adj] saxon period	17
18	the [adj] saxon period	17
19	the [adj -er] [adj] period	15
20	the [adj] postwar period	14
21	the [adj] postwar period	14
22	the [adj] victorian period	13
23	the [adj] victorian period	13
24	the same [adj] period	11
25	the [det] [adj] period	11
26	the same [adj] period	11
27	the whole [adj] period	10
28	the later [adj] period	10
29	the first [adj] period	10
30	the whole [adj] period	10